Firmware dump for a Quanta-made laptop motherboard, board number DAG74AMB8D0 at revision D, labelled G74A-D in the name. Quanta encodes its boards as DA plus project code plus MB, which helps confirm compatibility against the sticker or silkscreen on the PCB. The 5.46 MB rar archive should hold an SPI image to write with a hardware programmer when the machine fails to post. Verify the board revision matches, keep a backup of the original chip, and confirm the image size equals the chip capacity.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
All sources (6)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 20 Sept 2021 | Open file on RM Schematics |
| @BiosSchematicWorld | 25 Dec 2021 | Open file on RM Schematics |
| @pepeelectronica | 24 Apr 2022 | Open file on RM Schematics |
| @schematiclaptopramkushwaha | 13 Jul 2025 | Open file on RM Schematics |
| @schematics_bios | 25 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →